Portable fuse and fuse-block.



v G. A. DRUCKER.

PORTABLE FUSE AND FUSE BLOCK. APPLIoATIoNrILBD JULY14, 190s.

Patented Jan. 12, 1909.

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GEORGE ARCHIBALD DRUCKER, OF NEW YORK, N. Y.

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Application filed July 3.4, 1908.

Specification o1 Letters Patent.

Patented Jan. 12, 190,9.

- erial No. 443,501.

To all whom it may concern:

Be it known that l, Gir-onen Anon'inlirin DRUCKER, a citizen of the United States, residing in the borough of li/Qanhattan, city, county, and State of New York, have invented a certain new and useful improvement in Portable Fuse and Fuse-Blocks, of which the following is a full, clear, concise, and exact description.

My invention relates more particularly to fuses used for firing powder in 4connection with flash light photography and has for its objects to provide a means for increasing the intensity of the flash and thereby a larger zone illumination.

A further object is to provide a fuse that may be readily adjustable and conveniently portable.

The foregoing and other features of my invention will now be described in connection with the accompanying one sheet of drawings, forming part of this specification in which l have represented my fuse embodying the improvements in the preferred form, after which l shall point out more particularly in the claims those features which l believe to be new and of my own invention.

My invention consists in the features of construction, combination of elements and arrangement of-parts which will be exemplilied in the mechanism hereinafter described, and the scope of the application of which will be indicated in the claims.

Referring to the accompanying drawings in which similar characters of reference indicate like parts throughout the several views, 1Eigure l is a top view of my portable fuse and block. Fig. 2 is a longitudinal sectional elevation along the line 2 2 Fig. 1. Fig. 3 is a detail of means of securing the bifurcated fastening in the hole of the yokes. Fig. e is a cross section along the line 4 l Fig. 1. Fig. 5 is a detail of end of receptacle for flash powder. Fig. 6 is an end view showing flash powder receptacle supported solely by the yoles.

ln my invention l employ a rectangular base 1 of non-conducting material, with yokes 3 mounted thereon provided with holes 5 in the bottom of the yolres extending therethrough and through the base l. The yokes are provided with any well-known means for connecting to any electrical circuit 6. Slidably mounted on base l are two wedges 7 which are adapted to move across the holes 5 in the yoles 3, as will be readily seen by referring to 3, For my flash fuse l employ a troug S made from a piece of liber board or any other non-conducting, non-conilnistible material, folded and fastened at the ends as shown in Fig. 5. y'lhis trough is wider at the base than at the opening, as will be readily understood byl referring to its section, Fig. 4l. ln the bottom of the trough are two bifurcated fastenings 9 spaced so as to engage the holes 5 in theI yolies 3. Connecting these two fastenings is fine fuse wire l0 which passes under the horizontal portion of the bifurcated fastening and is clamped against the trough making an electrical Contact with the fastening. @ne prong of each bifurcated fastening secures each end of the wire 1) to the trough 8, the other depends from the bottom of the trough and engages the holes 5 as before stated, and are securely fastened to the yohes by jamming between the wedges 'T and side of holes 5. T he wire l0 completes the circuit between the yoiies 3. ln the trough or receptacle 8 l place sufficient liash powder, or proper ing" nts, for the required illumination ai a simple cover, not shown, is placed over the opening of tl'ie trough. i shellac the top of the bifurrated fastenings to prevent the incandescent metallic ingredients of the flash powder from accumulating around the fast enings and an across the gap after the fine wire is burned out. his prevents the possible oonsuinption of more current than is required for the explosion of the powder which sometimes causes considerable 'trouble in the ehr-- trical circuit to which the fuse bloeh is ionnected. rl"he object of the trough being wider at the base than at he opening is to direct the flash in a thin sheet of flame which increases the illuminated zone without limiting the powder capacity.

My invention may be used with or without a smoke bag that is usually employed for interior work.

To steady the trough or iiash powder receptacle on the ends, l e aploy pockets 1,2 mounted on base l. A. further object of these pockets is to close any leali that may 'lli h i be in the ends of the receptacle 8 and thereW by prevent the powder from sissing out and igniting anything exposed to the flame. rlhe object of the yolres is to provide a means of vertically supporting the trough 8.

ln practice l use the trough 8 for only one flash and then it is thrown away: the low llO cost permits this very readily. The troughs are folded in the laboratory secured on the ends and after the line wire l0 is adjusted and secured in place by the bifurcated fastenings a sufficient amount of flash powder is put in the trough and its cover put in place. In this way the powder and fuse wire are conveniently portable and may be readily carried around from place to place. When a flash is to be made I place in adjusted position my fuse block, connect with the electric circuit, open the switch, place the depending portions of the bifurcated fastenings in the holes in the base adapted to receive same, clamp the wedges home, remove the cover of the trough, and everything is ready for the flash. When the switch is thrown in the 'line wire melts under the current and ignites the flash powder which, being directed by the long narrow opening of the trough, flashes up in a thin sheet, producing a larger' zone of illumination than methods now employed.

I wish it distinctly understood that my portable fuse and fuse block herein illustrated and described, is in the form in which I desire to construct it, and that any changes or variations may be made as may be convenient or desirable without departing from the salient features of my invention.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is,"

l. A portable fuse, of the class described, consisting of a trough of ber board closed at the ends and wider at its base than at the opening, provided with a fine wire secured by fastenings to the bottom of the trough, the

said fastenings depending from the outside of the trough.

2. A portable fuse of the class described consisting of a trough of non-combustible and non-conducting material', closed at the ends provided with a line wire secured to the bottom of the trough by two fastenings which depend from the outside of trough.

3. A portable fuse of the class described consisting of a trough of non-combustible and non-conducting material closed at the ends provided with a fine wire terminating in bifurcated fastenings which depend from the trough.

4. In a portable fuse and block of the class described, in combination with a base of nonconducting material provided with two yokes mounted thereon, each yoke provided with a hole extending through the base; a trough of fiber board provided with a small wire terminating in bifurcated fastenings depending from the trough and spaced to 'engage the holes in the yokes, two Wedges slidably mounted on the non-conducting base adapted to secure the depending fastenings of the ber board to the yokes, and means for connecting the yokes in an electrical circuit.

5. In a portable fuse and fuse block of the class described, in combination, a base of non-conducting material provided with'two connecting the yokes in -an electrical circuit. Y

6. In a device of the character described in combination, a base of non-conducting material provided with two yokes of conducting material mounted thereon, each yoke provided with a hole in the bottom extending through the base; a receptacle for flash powder, made of non-conducting and non-combustible material, adapted to engage the aforementioned yokes provided with a cover and with a iine wire terminating in bifurcated fastenings; wedges slidably mounted on the aforementioned non-conducting base adapted to secure the depending portion of the fastening in the yokes; and means to electrically ignite the flash powder.

7. In a device of the character described,

in combination, a base of non-conducting material provided with two yokes of conduct-V` ing material mounted thereon, forming terminals of an electric circuit, each yoke provided with a hole extending through the base a trough of non-conducting and non-combustible material, closed at its ends and wider at the base than at its opening, containing flash powder to be exploded g wedges slidably mounted on the aforementioned base adapted to engage the depending portions of the bifurcated fastenings in the yokes, thereby connecting in circuit the iine wire.

This specification signed and witnessed in 911 Flat-Iron Building, New York city, this ninth day of July, A. D., 1908.

Groen ARcHiBALD DRUCKER. 

